Preparation method of EPDM (Ethylene-Propylene-Diene Monomer) rubber

A technology of EPDM rubber and propylene, which is applied in the field of rubber materials, can solve the problems of less types of third monomers and unfavorable development of EPDM rubber, and achieve good processing performance, appropriate double bond content, and high conversion rate Effect
CN102863590BActive Publication Date: 2014-04-30CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
Publication Date
2014-04-30

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Abstract

The invention provides a preparation method of an EPDM (Ethylene-Propylene-Diene Monomer) rubber. The method comprises the steps of polymerizing an ethylene, a propylene and a third monomer in an organic solvent under the action of a catalyst system to obtain the EPDM rubber. The third monomer is polybutadiene rubber with the content of over 9% of 1, 2-polybutadiene or polyisoprene rubber with the content of over 9% of 3, 4-polyisoprene, and the weight-average molecular weight of the third monomer is 200000-1000000; The catalyst system comprises a vanadium catalyst, an alkyl aluminum compound and an activation promoter. The obtained EPDM rubber has appropriate double bonds, so that sulfonation of the rubber can be carried out by using sulfur, and the EPDM rubber has good vulcanizing property and good processability. The experimental result shows that in the prepared EPDM rubber, the mole percentage of the double bond is 2%-10.5%, and the molecular weight distribution index is 2-5.
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Description

technical field

[0001] The invention relates to the field of rubber materials, in particular to a preparation method of EPDM rubber. Background technique

[0002] Ethylene-propylene rubber is a copolymer rubber with ethylene and propylene as the basic monomers. Compared with other rubber varieties, ethylene propylene rubber has the following advantages: 1. The main chain does not contain double bonds, is completely saturated, ozone resistance, aging resistance, chemical resistance and high temperature resistance; 2. Light specific gravity; 3. Excellent insulation performance ; Fourth, it is a rubber variety that can be highly oil-filled. Ethylene propylene rubber is one of the most promising types of rubber at present. Since its commercial production, its application fields have been continuously expanded, and it has been widely used in auto parts, building materials, wires and cables, heat-resistant rubber hoses, advanced sealing materials, lubricants Additives and polyol...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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